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POWPF datagrid - Update property after combo item selected
 

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  1. POWPF datagrid - Update property after combo item selected
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    <p>I'm new to WPF and have a question about an issue I'm having with a combobox on a datagrid. When an item is selected from the combo, the bound property does not update like I expect.</p> <p>Since I can't post images (this is the first time I've posted to SO), I'll attempt to explain. If I select "D00120" from the combo list, the combo will reflect the change but the grid property does not get changed.</p> <p>Xaml:</p> <pre><code>&lt;DataGridTemplateColumn Header="CPT Code" Width="75"&gt; &lt;DataGridTemplateColumn.CellTemplate&gt; &lt;DataTemplate&gt; &lt;ComboBox ItemsSource="{Binding PartBCombo, RelativeSource={RelativeSource AncestorType=Window}}" DisplayMemberPath="PartBLookup_CPTCode" SelectedValuePath="PartBLookup_ProcedureDescription" SelectedValue="{Binding PartBBilling_ProcedureName, UpdateSourceTrigger=PropertyChanged}" /&gt; &lt;/DataTemplate&gt; &lt;/DataGridTemplateColumn.CellTemplate&gt; &lt;/DataGridTemplateColumn&gt; </code></pre> <p>Property for combo items:</p> <pre><code> Partial Public Class PartBBilling_Combobox Private _PartBLookup_CPTCode As String Public Property PartBLookup_CPTCode As String Get Return _PartBLookup_CPTCode End Get Set(value As String) _PartBLookup_CPTCode = value End Set End Property Private _PartBLookup_ProcedureDescription As String Public Property PartBLookup_ProcedureDescription As String Get Return _PartBLookup_ProcedureDescription End Get Set(value As String) _PartBLookup_ProcedureDescription = value End Set End Property End Class </code></pre> <p>Property for datagrid:</p> <pre><code> Private _PartBBilling_CPT As String Public Property PartBBilling_CPT As String Get Return _PartBBilling_CPT End Get Set(value As String) _PartBBilling_CPT = value RaisePropertyChanged("PartBBilling_CPT") End Set End Property Private _PartBBilling_ProcedureName As String Public Property PartBBilling_ProcedureName As String Get Return _PartBBilling_ProcedureName End Get Set(value As String) If _PartBBilling_ProcedureName &lt;&gt; value Then _PartBBilling_ProcedureName = value RaisePropertyChanged("PartBBilling_ProcedureName") End If End Set End Property </code></pre> <p>When an item is selected, the UI displays correctly but the grid property does not get updated. Other than that, the combobox functions just fine.</p> <p>Thanks for any help or advice.</p>
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